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Posted to dev@pdfbox.apache.org by "savan patel (JIRA)" <ji...@apache.org> on 2017/11/23 07:30:00 UTC

[jira] [Created] (PDFBOX-4022) Cache ColorSpace instances in PDColorSpace.java

savan patel created PDFBOX-4022:
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             Summary: Cache ColorSpace instances in PDColorSpace.java
                 Key: PDFBOX-4022
                 URL: https://issues.apache.org/jira/browse/PDFBOX-4022
             Project: PDFBox
          Issue Type: Improvement
          Components: Rendering
    Affects Versions: 2.0.8, 2.0.7
         Environment: Windows 10
            Reporter: savan patel
         Attachments: PDColorSpace.java.patch, selection.pdf

I have a PDF which contains a lot of Images. Each time, pdfbox parse the image it uses the colorspace to parse it and most of the time colorspace is the same object. I tried to cache the colorspace instances in PDColorSpace.java as shown in the attached patch. For this particular PDF, this change improves the performance of parsing and rendering the images from 15 minutes down to 3 minutes. I shared the PDF.



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